Child Support

SDU Customer Service 1-877-225-7077


Illinois Department of Healthcare & Family Services

To Explore and Apply for Child Support Services/Custodial and Non-Custodial Parents. The department offers services to dependent children living in Illinois and out of state. To apply for child support services, a person does not have to apply for or receive public assistance.

Mailing your payments to the SDU

Illinois State Disbursement Unit (SDU)

P.O. Box 5400

Carol Stream, IL 60197-5400

provide the following information on each payment for each separate child support order:

  • Payor Name
  • Payment amount for each case
  • Docket number if there is more than one child support order
  • Last 4 digits of your social security number
  • Court case number
  • FIPS number for the issuing County (Woodford County is 1720300)
  • All checks should be made payable to the Illinois State Disbursement Unit

If you are making a payment because you have received a notice that additional enforcement is being pursued such as suspending your Driver’s License, Passport, or due to a Lien, etc., please submit your payment to:

Illinois State Disbursement Unit (SDU)
Attn: (Insert Enforcement Remedy such as Driver’s License, Passport, Lien, etc.)
P.O. Box 4614
Carol Stream, IL 60197-4614

Estimate Child Support 

NOTE: Your actual child support and/or medical support amounts may differ from the results you get from this estimator.

HFS/DCSS Customer Service Call Center 

To receive help collecting child support, help establishing
paternity or information on other Child Support Services, call the Customer Service Center at: 1-800-447-4278 (TTY: 1-800-526-5812)

Peoria Region –
401 Main Street, Suite 680
Peoria, Illinois 61602 

(Counties served: Fulton, Henderson, Henry, Knox, Marshall, McLean, Mercer, Peoria, Putnam, Rock Island, Stark, Tazewell, Warren, Woodford)

ExpertPay- An easy and secure way for the Parent Paying Child Support to make child support payments.
1-800-403-0879 |

Way2Go Card Debit MasterCard – debit card system for the recipient of child support. Child
support payments are loaded to this debit card and are used like any other debit card.
Customer Service 1-877-567-1769